Hi, I am a Make A Wish volunteer in the Spokane, WA area and I have a wish family that is asking for a pool repair for year round use. It is a large indoor fiberglass swimming pool, 37 ft. By 15 ft. 4 ft. In the shallow end and 10ft in the deep end. The water is drained and we are prepared to start the resin, epoxy, acid, etc. My main question is how do I support the pool walls from the inside to keep them pushed out as we work in the pool?